Assessment of seasonal and spatial water quality variation in a cascading lake system in Chennai, India.

Water quality and scarcity are among the most severe problems humans have been facing in the last decades. India, as a fast-developing country, is not an exception. The surface water quality has deteriorated due to anthropogenic activities.

Hydrological tracers, the herbicide metazachlor and its transformation products in a retention pond during transient flow conditions.

Since decades, surface water bodies have been exposed to pesticides from agriculture. In many places, retention systems are regarded as an important mitigation strategy to lower pesticide pollution. Hence, the processes governing the transport of pesticides in and through a retention system have to be understood to achieve sufficient pesticide attenuation.